CN201616942U

CN201616942U - LED lamp light-dimming device with remote control

Info

Publication number: CN201616942U
Application number: CN2010201159101U
Authority: CN
Inventors: 吴晔
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-12
Filing date: 2010-02-12
Publication date: 2010-10-27
Anticipated expiration: 2020-02-12

Abstract

The utility model relates to an LED lamp light-dimming device with remote control, comprising an LED lamp and a switch power supply, wherein the switch power supply supplies power to the LED lamp; the LED lamp light-dimming device also comprises a voltage sampling circuit, a current sampling circuit, a pulse width modulating control circuit, an MCU microprocessor, an encoder, a radio-frequency transmitter, a radio-frequency receiver and a self-learning decoder; the switch power supply is electrically connected with the input end of the MCU microprocessor after being sampled by the voltage sampling circuit and the current sampling circuit; the output end of the MCU microprocessor is electrically connected with the input end of the pulse width modulating control circuit; the output end of the pulse width modulating control circuit is electrically connected with the switch power supply; the output end of the encoder is electrically connected with the radio-frequency transmitter; the radio-frequency receiver is electrically connected with the input end of the self-learning decoder; and the output end of the self-learning decoder is electrically connected with the input end of the MCU microprocessor. The LED lamp light-dimming device can realize stepless, continuous and constant-current light dimming, has no stroboflash in low brightness, has convenient dimming of the wireless remote control, and achieves the purposes of saving energy, reducing emission and prolonging the service life of the lamp.

Description

The LED light fixture light modulating device of band remote control

Technical field

The utility model relates to the LED field of light fittings, specifically, relates to a kind of LED light fixture light modulating device with remote control.

Background technology

The application of LED luminous tube has had very long history, but LED is in recent years a thing as lighting, along with development of semiconductor, the particularly appearance of high-power LED luminous tube, Switching Power Supply and relevant technology improve, just be achieved as lighting with the LED lamp, but use the LED lamp as lighting at present, also also have a lot of further places of raising that are worth, for example optical attenuation speed is fast, problems such as the Switching Power Supply life-span is short, and the caloric value of great power LED is big.Energy problem, the carbon emission problem, the problem of global warming all is present hot issue, and illumination concerns huge numbers of families, and all trades and professions are accounting for very big ratio on power usage, so illumination is energy-conservation most important, usually our illuminating lamp all is Kai Heguan, and brightness always maximizes, and energy consumption also is maximization, caloric value also is maximization, to energy consumption, environment, the life-spans of bulb etc. are all unfavorable, and common lighting in use, along with scene, the variation of factors such as environment, people are different to the brightness requirement of illumination, need many time brightlyer as the people, the people needs more secretly in the time of few or unmanned, change brightness in good time, not only can satisfy the requirement of people to brightness, energy savings that simultaneously also can be a large amount of reduces discharging, prolongs the life-span of light fixture.And common LED lamp tool luminous efficiency is low at present, regulates difficulty continuously, occurs the phenomenon of stroboscopic lamp during low-light level easily, and does not have the function of wireless remote control.

Summary of the invention

The purpose of this utility model provides a kind of LED light fixture light modulating device that does not have the band remote control easy to adjust of stroboscopic, wireless remote control can realize stepless, continuous, constant-current dimming, low-light level the time.

The technical scheme that realizes above-mentioned purpose is: a kind of LED light fixture light modulating device with remote control, comprise LED light fixture and Switching Power Supply, Switching Power Supply provides power supply to the LED light fixture, also comprise voltage sampling circuit, current sampling circuit, control circuit for pulse-width modulation, the MCU microprocessor, encoder, radiofrequency launcher, radio frequency receiver and self study decoder, Switching Power Supply is electrically connected with the input of MCU microprocessor after voltage sampling circuit and current sampling circuit sampling, the output of MCU microprocessor is electrically connected with the input of control circuit for pulse-width modulation, the output of control circuit for pulse-width modulation is electrically connected with Switching Power Supply, the output of encoder is electrically connected with radiofrequency launcher, radio frequency receiver is electrically connected with the input of self study decoder, and the output of self study decoder is electrically connected with the input of MCU microprocessor.

After adopting technique scheme, Switching Power Supply is after the power supply that the LED light fixture provides is sampled through voltage sampling circuit, current sampling circuit, after comparing through calculation process and with the setting brightness value of former memory by the MCU microprocessor, send modulating pulse to control circuit for pulse-width modulation, Switching Power Supply is regulated, deliver to the LED light fixture again to reach the constant current power supply.Brightness regulation then is to be launched through radiofrequency launcher by encoder encodes, after radio frequency receiver receives signal, by sending the MCU microprocessor to set required brightness value after the self study decoder for decoding.When needs use the remote controller of different coding mode, can be by the self-learning function of self study decoder, new coded system is learnt and remembered, to adapt to different remote controllers.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

As Fig. 1, shown in 2, a kind of LED light fixture light modulating device with remote control, comprise LED light fixture 2 and Switching Power Supply 1, Switching Power Supply 1 provides power supply to LED light fixture 2, also comprise voltage sampling circuit 3, current sampling circuit 4, control circuit for pulse-width modulation 5, MCU microprocessor 6, encoder 7, radiofrequency launcher 8, radio frequency receiver 9 and self study decoder 10, Switching Power Supply 2 is electrically connected with the input of MCU microprocessor 6 after voltage sampling circuit 3 and current sampling circuit 4 samplings, the output of MCU microprocessor 6 is electrically connected with the input of control circuit for pulse-width modulation 5, the output of control circuit for pulse-width modulation 5 is electrically connected with Switching Power Supply 1, the output of encoder 7 is electrically connected with radiofrequency launcher 8, radio frequency receiver 9 is electrically connected with the input of self study decoder 10, and the output of self study decoder 10 is electrically connected with the input of MCU microprocessor 6.The model of MCU microprocessor 6 is: PIC12F683, the model of encoder is: PT2262, the model of self study decoder is PT2272.

Operation principle of the present utility model is as follows:

After 2 energisings of LED light fixture, Switching Power Supply 1 is sent soft-start signal, prevent that big starting current from causing damage to LED light fixture 2 and other device, set up the working power of each operating circuit, this moment, MCU microprocessor 6 accessed the last time of employed brightness value during powered-down, send control signal to control circuit for pulse-width modulation, 1 pair of LED light fixture 2 of control switching sends corresponding electric current, voltage carries out the constant current power supply, when extraneous supply voltage changes or load when changing, voltage sampling circuit 3, current sampling circuit 4 is with the information that samples, being sent to MCU microprocessor 6 compares back computing adjustment and goes to control the pulse that control circuit for pulse-width modulation 5 sends with new value, to guarantee that LED light fixture 2 obtains the constant current power supply, the brightness of keeping light fixture is constant.

One, remote control light modulating function

Because scene, environment, personnel etc. change when needing to regulate lamp brightness, can launch corresponding radiofrequency signal through radiofrequency launcher 8 by encoder 7 codings, after radio frequency receiver 9 receives radiofrequency signal, by sending MCU microprocessor 6 to set the brightness value of required adjusting after 10 decodings of self study decoder, after finishing, setting preserves set point by MCU microprocessor 6, be saved in always and reset new value next time, this moment, MCU microprocessor 6 was with new set point, participate in computing and remove to control control circuit for pulse-width modulation 5, Switching Power Supply 1 is carried out brightness adjustment control, reach the purpose of light modulation, owing to use the radio-frequency communication mode, can accept data transmits, the mode of light modulation also can be set with the mode of remote controller, and is convenient, flexible.

Two, the remote controller self-learning function of newly encoding

When needs use the remote controller of different coding mode, self-learning function by self study decoder 10, allow the little processing 6 of MCU enter mode of learning earlier, receive the signal of new coding remote controller then, and memory, analyze its code signal, study end finishing after, and saving result, this function can adapt to various remote controller control light fixture, increases the flexibility that light fixture uses.

Claims

1. LED light fixture light modulating device with remote control, comprise LED light fixture (2) and Switching Power Supply (1), Switching Power Supply (1) provides power supply to LED light fixture (2), it is characterized in that: also comprise voltage sampling circuit (3), current sampling circuit (4), control circuit for pulse-width modulation (5), MCU microprocessor (6), encoder (7), radiofrequency launcher (8), radio frequency receiver (9) and self study decoder (10), Switching Power Supply (2) is electrically connected with the input of MCU microprocessor (6) after voltage sampling circuit (3) and current sampling circuit (4) sampling, the output of MCU microprocessor (6) is electrically connected with the input of control circuit for pulse-width modulation (5), the output of control circuit for pulse-width modulation (5) is electrically connected with Switching Power Supply (1), the output of encoder (7) is electrically connected with radiofrequency launcher (8), radio frequency receiver (9) is electrically connected with the input of self study decoder (10), and the output of self study decoder (10) is electrically connected with the input of MCU microprocessor (6).